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Preparation method of H2SO4 modified granular anthracite, H2SO4 modified granular anthracite and application

A technology of H2SO4 and anthracite, applied in chemical instruments and methods, water/sludge/sewage treatment, water/sewage treatment, etc., can solve the problem of high cost, achieve fast adsorption rate, low cost, and increase the effect of adsorption capacity

Active Publication Date: 2020-06-09
SOUTHWEAT UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] At present, there are many studies on the adsorption of sulfonamide antibiotics by activated carbon. However, the adsorption of trace organic pollutants by activated carbon is mainly used in pretreatment and advanced treatment, and the cost is relatively high.

Method used

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  • Preparation method of H2SO4 modified granular anthracite, H2SO4 modified granular anthracite and application
  • Preparation method of H2SO4 modified granular anthracite, H2SO4 modified granular anthracite and application
  • Preparation method of H2SO4 modified granular anthracite, H2SO4 modified granular anthracite and application

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preparation example Construction

[0042] The present invention H 2 SO 4 The preparation method of modified granular anthracite is as follows:

[0043] (1) Granular anthracite purification: the granular anthracite with a particle size of 0.8-1.2 mm is washed with deionized water, filtered, and dried for later use;

[0044] (2) Prepare H with a concentration of 0.5-6mol / L 2 SO 4 solution;

[0045] (3) Take the prepared H 2 SO 4 The solution is placed in a container, and the purified granular anthracite is added according to the solid-to-liquid ratio of 1:3-1:10;

[0046] (4) Take out the container after reacting in a water bath at 50-80°C for 1-4h, treat it under 40kHz room temperature ultrasonic conditions for 10min-90min, and then place it in a constant temperature shaker for 10-24h;

[0047] (5) the granular anthracite processed in step (4) is cleaned to neutrality with deionized water, and put into an oven to dry, that is, H 2 SO 4 Modified granular anthracite.

Embodiment 1H2

[0048] Example 1H 2 SO 4 Study on Adsorption Removal Efficiency of Modified Granular Anthracite

[0049] figure 1 It is a picture of the appearance of granular anthracite coal with a particle size of 0.8-1.2mm.

[0050] The 0.8-1.2mm granular anthracite filter material is washed with deionized water, filtered, and dried at 100°C for later use. Prepare 0.5mol / L, 1mol / L, 2mol / L, 3mol / L and 6mol / L H 2 SO 4 100ml of the solution were placed in conical flasks with stoppers, and 20g of dried anthracite particles were added respectively. Put the above-mentioned Erlenmeyer flask with stopper into a 70°C water bath, take it out after 2h of reaction, and after ultrasonic treatment at room temperature for 0.5h, put it into a shaker for 24h evenly, wash the anthracite with deionized water until neutral, and put it in 100°C Oven drying, that is, the corresponding concentration of H 2 SO 4 Solution-modified granular anthracite, labeled as 0.5H-anthracite (0.5H-A), 1H-anthracite (1H-...

Embodiment 2H2

[0054] Example 2H 2 SO 4 Adsorption Equilibrium Experiment of Modified Granular Anthracite

[0055] According to the method in embodiment 1, prepare the H of 3mol / L concentration 2 SO 4 Solution, modified particles of anthracite, prepared 3H-anthracite (3H-A).

[0056] Add 200 ml of SMZ or SMX solutions with different initial concentrations (50 μg / L, 100 μg / L, 200 μg / L, 500 μg / L, 1000 μg / L, 2000 μg / L, 5000 μg / L) into a series of 250 mL stoppered Erlenmeyer flasks. Add 100mg of granular anthracite or 3H-anthracite to the bottle, and place it in a constant temperature oscillator at (25±0.2)°C and 120rpm for 24h. Immediately after taking out the sample, filter it with a 0.45 μm glass fiber membrane, extract it with a SPE solid phase extraction device, and use a high performance liquid chromatography to measure the content of SMZ or SMX in the water sample of the filtered extract, and then calculate the adsorption of SMZ or SMX amount, such as Figure 4 .

[0057] Depend on...

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Abstract

The invention discloses a preparation method of H2SO4 modified granular anthracite, the H2SO4 modified granular anthracite and an application of the H2SO4 modified granular anthracite, and belongs tothe technical field of environment-friendly water treatment. The method comprises the following steps: purifying granular anthracite, putting the purified granular anthracite into H2SO4 solutions withdifferent concentrations according to a certain solid-to-liquid ratio, carrying out water bath reaction, ultrasonic treatment and constant-temperature shaking table oscillation, cleaning to neutrality, and drying to obtain the H2SO4 modified granular anthracite with corresponding concentration. After the granular anthracite is modified with H2SO4, the specific surface area is increased, the content of basic groups is reduced, the content of acidic groups is increased, the adsorption capacity to sulfonamide antibiotics is increased, and the adsorption rate is high, so that the granular anthracite has mechanical filtration performance and adsorption performance at the same time, is low in cost and simple to operate, has good economic and environmental benefits, and provides a new thought for removal of antibiotic drugs in a water environment.

Description

technical field [0001] The invention relates to the technical field of environmental protection water treatment, in particular to a H 2 SO 4 Preparation method of modified granular anthracite and H 2 SO 4 Modified granular anthracite and its application. Background technique [0002] Antibiotics are one of the most important medical inventions in the 20th century. They have played a huge role in controlling infectious diseases, preventing animal diseases, and promoting animal production. However, studies have found that with the use of a large number of antibiotics, the residual antibiotics in the environment are becoming more and more serious. Most antibiotics are only absorbed in a small amount after being ingested into the body, and more than 85% of the antibiotics are excreted in the form of original drugs or metabolites, and finally enter the natural environment, and present a state of "persistent existence", so they are called antibiotics. as "pseudo persistent or...

Claims

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Application Information

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IPC IPC(8): B01J20/20C02F1/28B01J20/30C02F101/38
CPCB01J20/20C02F1/283C02F2101/38C02F2101/40
Inventor 何靖
Owner SOUTHWEAT UNIV OF SCI & TECH
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